Burglar-alarm



(Model.)

A.. C. TUNNER.

BURGLAR ALARM. Y No. 318,834. Patented May 26, 1885.

WITNBSSES: 5%/ I /QNTR f /Wma f BY v ATTORNEY turen Srarrs Partnr @reina A. CLARKE TONNER, OF CANTON, OHIG.

BURGLAR-ALARM.

SPECIFICATION forming part of Letters Patent No. 318,834, dated May 26,1885.

Application mea october en, resi. (Model.)

T all 10.71.0721, zizi may ccnccrn:

Be it known that I, A. CLARKE TONNER, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, haveinvented certain new and useful Improvements in Burglar-Alarms; and'I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon, in which- Figure l is a top view, showing the alarm placed in proper position and set ready for an alarm. Fig. 2 is a top view showing the alarm sprung. Fig. 3 is a transverse section on line .fr a, Fig. 1. Fig. et is a detached view of the wheel and ratchet. Fig. 5 is a top view showing part of the bell and spider-plate broken away.

The present invention has relation to that class ot' burglar-alarms designed to be temporarily attached to a door or other place designed to be used; and its nature consists in the different parts and combinations of parts hereinafter described, and pointed out in the claims.

Similar letters of reference indicate corresponding parts in all the igures of the drawings.

In the accompanying drawings, A represente the bascplate, which is substantially of the form shown in Fig. 5. This plate Ais provided with the extensions or arms B and G. To the plateA isattached the spider plate or cap D, the locking-slide E, and the lockinglever F, .substantially as shown in the drawings.

The outer end of the arm Bis bent, as shown in Fig. 3, and is provided with the desired number of piercing-points a. This bent or curved portion of the arm B is formed thin, so as not to interfere with the closing of a door when the alarm is placed in proper position.

The arm C is provided with the hinged cap G, which is substantially7 of the form shown inthe drawings. The hinged cap G is provided with the desired number of piercingpoints b. These piercing-points b are inclined toward the arm B, so that they will cause the points a to be forced into the door-casing as the cap G is forced downward, thereby holding the alarm in proper position.

The post H is Substantially of the form shown in Fig. 3, and turns in suitable bearings in the base-plate A and the spidercap D. To this post is rigidly attached the ratchet-wheel I, which is ofthe form shown in Fig. 4. On the post H is loosely placed the wheel J, which is oi' the form shown Ain Fig. 4. To this wheel J is attached the springdog K, which engages the ratchet-wheel I, as seen in said Fig. 4.

The escapement d is located as seen in Fig. 5, and is so arranged that it will engage the teeth of the wheel J. To the escapementis rigidly attached the hammer-arm e, said arm being bent or curved, as shown in the drawings. To this hammer-armvis attached the hammerf, as shown.

The locking-slide E is forked at one end, as shown, and in said fork fits a pin, z', secured to base-plate A, and also is provided with the pin g, which is for the purpose of pressing on the hammer-arm c, and thereby locking the escapement when said slide E is pressed inward by means of the locking-lever F.

To the arm B is attached the hinged cap L, which is substantially of the form shown in the drawings. This hinged cap L is provided with the recess h, which receives the outer end of the locking-slide E, as seen in Fig. 5.

The bell M is substantially ofthe form shown in the drawings, and is rigidly attached to the spider-plate D, and is so arranged that the hammer will strike said bell as the alarm is running down, motion being communicated to the hammer by means of the spring N, said spring N being attached at one end to the winding-post H, the opposite end being attached to one ofthe arms ofthe spider-plate D.

In use the locking-lever F is placed in the position indicated by the dotted lines in Fig. 5, so as to bring its heel against the slide E, and thus prevent the latter from moving. The spring N is then wound by turning the post H, and the alarm placed on the door-casing, as seen in Figs. l and 2, when the door is closed, and the hinged cap L placed in the position shown in Fig. l, with the end of slide E fitting against the walls of slot h, so that the slide cannot move, when the locking-lever is placed as shown in Figs. l, 2, and 5, so as to remove its heel from Contact with the slide. The alarm is now set. Now, when the door is IOO opened the hinged plate L is thrown back into the position shown in Fig. 2, so as to be free from contact with end of slide E, and then the iniiuence of spring N on the post H Will cause the latter to revolve and carry with it the wheel J, so as to move it from binding contact with the escapement d. The latter being released and caused to oscillate, by the'teeth of the Wheel striking against it, motion is imparted from it to the arm e, so as to cause the hammerf to strike the gong M and sound the alarm until the spring loses its power, the lug or slot g being moved with the slide E, so as not to bind against the arm e.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an alarm, the combination, with abaseplate, gong, hammer, cscapement mechanism, and spring for actuating the same, of a slide, E, adapted to bear against the arm of the hammer, a lever adapted to be brought against said slide to hold it against the hammer-arm, and a hinged plate adapted when in one position to hold said slide against movement, and then in another position to release it, substantially as described.

2. In an alarm, the combination of a baseplate provided at one point with a bent spurarm, and at another with a hinged spur-arm, a gong, hammer, escapement mechanism, and spring for actuating the same, a slide, E, operating to control the movement of the hammer, a pivoted lever, F, for locking said slide, and a hinged plate, L, formed with a slot adapted when in one position to fit about the end of the slide E, to hold it, and when in another position to release it, substantially as described.

3. The combination, with base-plate A, spider D, and gong M, of the windingpost II, toothed disks I and J, and spring N, connected with said post, escapement d, and hammer e f, slide E, lever F, and the hinged slotted plate L, the several parts adapted to operate substantially as described.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two Witnesses.

A. oLARKE TONNER.'

Witnesses:

ED. F. FREAsE, FRED W. BOND. 

